Core M vs Core i5m vs Core i7m

If you are planning on gaming with an intel CPU you make sure your laptop has a gaming graphics card. Unless you can find one with Intels Iris Pro integrated GPU the HD4000 is the best you can get with Intel chips. Iris Pro is on par with AMD's integrated Graphics.
 
Iris pro is decent but still not as good as say an gt860m 🙂
its more like 7670 (pc gpu) or in between a gt740m and 750m if that helps you any.